PRS Timing Adjustment for Wireless Positioning Accuracy
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing positioning reference signals (PRS) for accurate and reliable wireless communication, particularly in scenarios requiring high precision and low latency.
Innovation Solution
A method and apparatus for performing wireless communication by obtaining and managing information related to PRS configurations, including IDs of PRS resources and sequences, starting slots and symbols, and timing adjustments, to facilitate accurate transmission and reception of PRS signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If PRS transmission timing is not adjusted, then device complexity is reduced, but positioning accuracy deteriorates due to timing misalignment
Solution Approach 1:
The transmitting device performs timing adjustment in advance before PRS transmission based on uplink timing information. This preliminary timing alignment ensures that the PRS arrives at the receiving device at the correct time without requiring complex real-time synchronization, thus improving positioning accuracy while keeping the system relatively simple.
Solution Approach 2:
The transmitting device obtains uplink timing information from the network device (feedback) and uses this information to adjust the PRS transmission timing. This feedback mechanism enables the device to automatically synchronize its PRS transmission with the network timing, improving positioning accuracy without requiring complex manual configuration.
2Reliability
If PRS configuration information is managed manually, then automation level is reduced, but system complexity is lowered, but positioning reliability deteriorates in high-precision scenarios
Solution Approach 1:
The transmitting device automatically manages PRS configuration information including resource ID, sequence ID, starting slot, and starting symbol without requiring manual intervention. The device self-configures these parameters based on obtained timing adjustment information, enabling high-reliability positioning while maintaining automated operation.
Solution Approach 2:
The device obtains and processes PRS configuration information in advance before transmission. By pre-configuring all necessary parameters (resource ID, sequence ID, timing information) beforehand, the system ensures reliable PRS transmission with proper timing alignment, achieving both high automation and high reliability.
3Measurement precision
If timing adjustment information is not transmitted to third device, then communication overhead is reduced, but positioning accuracy deteriorates
Solution Approach 1:
The transmitting device acts as an intermediary by obtaining timing adjustment information from the network device and transmitting it to the third device (receiving device). This intermediary role ensures that the receiving device has the necessary timing information to accurately process PRS signals, improving positioning accuracy while managing information flow efficiently.
Data Source
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AI summary
Proposed are a method by which a first device performs wireless communication and an apparatus supporting same. For example, the first device may acquire information related to a PRS configuration. For example, the information related to the PRS configuration may include at least one of information regarding an ID of a PRS resource, information regarding an ID of a PRS sequence, information regarding a start slot of the PRS resource, and information regarding a start symbol of the PRS resource. For example, the first device may acquire information regarding timing adjustment, which is for adjusting a transmission timing of a PRS. For example, the first device may transmit the PRS to a second device. For example, the first device may transmit, to a third device, the information regarding the timing adjustment.